38381628 has 24 divisors (see below), whose sum is σ = 91641088. Its totient is φ = 12496176.

The previous prime is 38381621. The next prime is 38381647. The reversal of 38381628 is 82618383.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38381621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36676 + ... + 37707.

Almost surely, 2^38381628 is an apocalyptic number.

It is an amenable number.

38381628 is an abundant number, since it is smaller than the sum of its proper divisors (53259460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38381628 is a wasteful number, since it uses less digits than its factorization.

38381628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74433 (or 74431 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 38381628 is about 6195.2907922066. The cubic root of 38381628 is about 337.3192535624.

The spelling of 38381628 in words is "thirty-eight million, three hundred eighty-one thousand, six hundred twenty-eight".